New Dual XPR522 600 Watt 2-Channel Class A/B Car Audio Power Amplifier Amp New Dual XPR522 600 Watts 2-Channel Class A/B Car Audio Power Amplifier Amp Number of Channels: 2/1 Power Output (4 O): 150 Watts x 2 Power Output (2 O): 300 Watts x 2 Power Bridged (4 O): 600 Watts x 1